Implement reset() in panners, and use it from the GUI (fixes #4196).

git-svn-id: svn://localhost/ardour2/branches/3.0@10282 d708f5d6-7413-0410-9779-e7cbd77b26cf

gtk2_ardour/mono_panner.cc

@@ -34,6 +34,7 @@
 
 #include "ardour/panner.h"
 #include "ardour/panner.h"
+#include "ardour/pannable.h"
 
 #include "ardour_ui.h"
 #include "global_signals.h"
@@ -55,8 +56,9 @@ static const int top_step = 2;
 MonoPanner::ColorScheme MonoPanner::colors;
 bool MonoPanner::have_colors = false;
 
-MonoPanner::MonoPanner (boost::shared_ptr<PBD::Controllable> position)
-        : position_control (position)
+MonoPanner::MonoPanner (boost::shared_ptr<ARDOUR::Panner> panner)
+	: _panner (panner)
+	, position_control (_panner->pannable()->pan_azimuth_control)
         , dragging (false)
         , drag_start_x (0)
         , last_drag_x (0)
@@ -64,7 +66,7 @@ MonoPanner::MonoPanner (boost::shared_ptr<PBD::Controllable> position)
         , detented (false)
         , drag_data_window (0)
         , drag_data_label (0)
-        , position_binder (position)
+        , position_binder (position_control)
 {
         if (!have_colors) {
                 set_colors ();
@@ -333,8 +335,7 @@ MonoPanner::on_button_release_event (GdkEventButton* ev)
         }
 
         if (Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier)) {
-                /* reset to default */
-                position_control->set_value (0.5);
+		_panner->reset ();
         } else {
                 StopGesture ();
         }

gtk2_ardour/mono_panner.h

@@ -34,7 +34,7 @@ namespace PBD {
 class MonoPanner : public Gtk::DrawingArea
 {
   public:
-	MonoPanner (boost::shared_ptr<PBD::Controllable> pos);
+	MonoPanner (boost::shared_ptr<ARDOUR::Panner>);
 	~MonoPanner ();
 
         boost::shared_ptr<PBD::Controllable> get_controllable() const { return position_control; }
@@ -54,6 +54,7 @@ class MonoPanner : public Gtk::DrawingArea
         bool on_leave_notify_event (GdkEventCrossing* ev);
 
   private:
+	boost::shared_ptr<ARDOUR::Panner> _panner;
         boost::shared_ptr<PBD::Controllable> position_control;
         PBD::ScopedConnectionList connections;
         bool dragging;

gtk2_ardour/panner_ui.cc

@@ -283,7 +283,7 @@ PannerUI::setup_pan ()
                         boost::shared_ptr<Pannable> pannable = _panner->pannable();
                         boost::shared_ptr<AutomationControl> ac = pannable->pan_azimuth_control;
 
-                        mp = new MonoPanner (ac);
+                        mp = new MonoPanner (_panner);
 
                         mp->StartGesture.connect (sigc::bind (sigc::mem_fun (*this, &PannerUI::start_touch),
                                                                       boost::weak_ptr<AutomationControl> (ac)));

gtk2_ardour/stereo_panner.cc

@@ -418,7 +418,7 @@ StereoPanner::on_button_release_event (GdkEventButton* ev)
 		return false;
 	}
 
-	bool dp = dragging_position;
+	bool const dp = dragging_position;
 
 	dragging = false;
 	dragging_position = false;
@@ -432,9 +432,7 @@ StereoPanner::on_button_release_event (GdkEventButton* ev)
 	}
 
 	if (Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier)) {
-		/* reset to default */
-		position_control->set_value (0.5);
-		width_control->set_value (1.0);
+		_panner->reset ();
 	} else {
 		if (dp) {
 			StopPositionGesture ();

libs/ardour/ardour/panner.h

@@ -81,7 +81,7 @@ public:
 
 	virtual PBD::AngularVector signal_position (uint32_t) const { return PBD::AngularVector(); }
 
-	virtual void reset() {}
+	virtual void reset () = 0;
 
 	void      set_automation_state (AutoState);
 	AutoState automation_state() const;

libs/panners/1in2out/panner_1in2out.cc

@@ -373,3 +373,10 @@ Panner1in2out::value_as_string (boost::shared_ptr<AutomationControl> ac) const
                 return _pannable->value_as_string (ac);
         }
 }
+
+void
+Panner1in2out::reset ()
+{
+	set_position (0.5);
+	update ();
+}

libs/panners/1in2out/panner_1in2out.h

@@ -58,6 +58,8 @@ class Panner1in2out : public Panner
 
 	XMLNode& get_state ();
 
+	void reset ();
+
   protected:
 	float left;
 	float right;

libs/panners/2in2out/panner_2in2out.cc

@@ -490,3 +490,11 @@ Panner2in2out::value_as_string (boost::shared_ptr<AutomationControl> ac) const
                 return _pannable->value_as_string (ac);
         }
 }
+
+void
+Panner2in2out::reset ()
+{
+	set_position (0.5);
+	set_width (1);
+	update ();
+}

libs/panners/2in2out/panner_2in2out.h

@@ -66,6 +66,8 @@ class Panner2in2out : public Panner
 
         void update ();
 
+	void reset ();
+
   protected:
 	float left[2];
 	float right[2];

libs/panners/vbap/vbap.cc

@@ -473,3 +473,12 @@ VBAPanner::set_width (double w)
 {
         _pannable->pan_width_control->set_value (min (1.0, max (-1.0, w)));
 }
+
+void
+VBAPanner::reset ()
+{
+	set_position (0);
+	set_width (1);
+
+	update ();
+}

libs/panners/vbap/vbap.h

@@ -63,6 +63,8 @@ public:
         PBD::AngularVector signal_position (uint32_t n) const;
         boost::shared_ptr<Speakers> get_speakers() const;
 
+	void reset ();
+
 private:
         struct Signal {
             PBD::AngularVector direction;